com.google.appengine.api.datastore

## Class DatastoreNeedIndexException

- java.lang.Object
- - java.lang.Throwable
  - - java.lang.Exception
    - - java.lang.RuntimeException
      - - com.google.appengine.api.datastore.DatastoreNeedIndexException

- All Implemented Interfaces:
    java.io.Serializable

      public class DatastoreNeedIndexException
      extends java.lang.RuntimeException

  `DatastoreNeedIndexException` is thrown when no matching index was found for a query requiring an index. Check the Indexes page in the Admin Console and your datastore-indexes.xml file.
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `DatastoreNeedIndexException(java.lang.String message)`
    `DatastoreNeedIndexException(java.lang.String message, java.lang.Throwable cause)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.String` | `getMessage()`
    `java.lang.String` | `getMissingIndexDefinitionXml()`

    - ### Methods inherited from class java.lang.Throwable

      `addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### DatastoreNeedIndexException

          public DatastoreNeedIndexException(java.lang.String message)

    - #### DatastoreNeedIndexException

          public DatastoreNeedIndexException(java.lang.String message,
                                             java.lang.Throwable cause)

  - ### Method Detail

    - #### getMessage

          public java.lang.String getMessage()

      Overrides:
        `getMessage` in class `java.lang.Throwable`

    - #### getMissingIndexDefinitionXml

          public java.lang.String getMissingIndexDefinitionXml()

      Returns:
        The xml defining the missing index. Can be `null`.